diff --git a/bin/chio/chio.1 b/bin/chio/chio.1
index 22696f4c9d0..586546e9bf4 100644
--- a/bin/chio/chio.1
+++ b/bin/chio/chio.1
@@ -194,6 +194,7 @@ Configures the changer to use picker 2 (third picker) for operations.
 /dev/ch0 - default changer device
 .Sh SEE ALSO
 .Xr mt 1 ,
+.Xr ch 4 ,
 .Xr mount 8 .
 .Sh AUTHOR
 The